in 2007, the hair fragments were sent to the fbi's dna laboratory in quantico, virginia. the result? the lab said it found this dna sequence in only 29 out of more than 1,100 samples of african-american hairs in its database. less than 3%. most important, wayne williams' dna had the same sequence. >> i think -- i don't think they said it was a match. they said they could not rule out whomever the hairs were from as being the possible donor. >> the fbi's hal dedman, a dna expert, said this finding is as strong as it can get with this particular type of testing. >> it probably would exclude 98% or so of the people in the world. >> did you kill 11-year-old patrick baltazar? >> i did not kill patrick baltazar or anybody else. >> did you ever meet patrick baltazar? >> no, i did not. >> never been in contact with that kid? >> i don't even know a patrick baltazar. >> we offered to show the dna findings to the stepmother, sheila baltazar. >> i can't read it. please don't make me read it. oh, my god! >> so we told her what the fbi report said. wayne williams cannot be excluded as